Casio G-Shock GWM530A-1

• World time 31 time zones (48 cities + coordinated universal time), city code display, daylight saving on/off

• Stopwatch

  1/100-second stopwatch Measuring capacity: 23:59'59.99'' Measuring modes: Elapsed time, split time, 1st-2nd place times

• Timer

  Countdown timer Measuring unit: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minutes to 24 hours (1-minute increments and 1-hour increments)

• Alarm/hourly time signal

  Daily alarms 5 independent daily alarms (4 one-time alarms and 1 snooze alarm)
  Hourly time signal

• Light

  Electro-luminescent backlight Full auto EL light, afterglow
  Full auto-calendar (to year 2099)
  
• Time calibration signal reception Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful) *5 times a day for the Chinese calibration signal Manual receive The latest signal reception results
  Time Calibration Signals Station name: DCF77 (Mainflingen, Germany) Frequency: 77.5 kHz Station name: MSF (Anthorn, England) Frequency: 60.0 kHz Station name: WWVB (Fort Collins, United States) Frequency: 60.0 kHz Station name: JJY (Fukushima, Fukuoka/Saga, Japan) Frequency: 40.0 kHz (Fukushima) / 60.0 kHz (Fukuoka/Saga) Station name: BPC (Shangqiu City, Henan Province, China) Frequency: 68.5 kHz
• 12/24-hour format

Case width: 46mm
Case Height: 16.6mm